Understanding Floor Area Ratio (FAR) and its Calculation in Dhaka as per RAJUK

 

Introduction

Welcome to our comprehensive guide on calculating the Floor Area Ratio (FAR) for buildings in Dhaka, Bangladesh, in accordance with the regulations set by the Rajdhani Unnayan Kartripakkha (RAJUK). In this article, we will provide you with detailed information and step-by-step instructions to help you understand and calculate the FAR for your building project. Whether you are an architect, a developer, or a property owner, this guide will equip you with the necessary knowledge to comply with the regulations and optimize your building's potential.

What is Floor Area Ratio (FAR)?

Floor Area Ratio, commonly referred to as FAR, is a crucial parameter used in urban planning and building regulations. It is a ratio that determines the amount of floor area that can be constructed on a given plot of land. By setting limitations on the maximum floor area, FAR aims to control the intensity of development, maintain infrastructure capacity, and preserve the character of the surrounding area.

Importance of Calculating FAR

Understanding and accurately calculating the FAR for your building project is essential to ensure compliance with the local building codes and regulations. Failure to adhere to these guidelines can result in legal complications, delays, or even the need for costly modifications. Moreover, by optimizing the utilization of available space within the permissible FAR, you can enhance the value and efficiency of your property.

Step-by-Step Calculation of FAR

To calculate the Floor Area Ratio for your building in Dhaka, follow these step-by-step instructions:

  1. Determine the Total Plot Area: Begin by measuring the total area of your plot in square feet or square meters. Ensure that you consider the entire area within the plot boundaries, excluding any roads, setbacks, or open spaces.
  2. Identify the Buildable Area: Next, identify the buildable area within your plot. This refers to the portion of the plot where construction is permitted. It is important to account for any setbacks or easements mandated by local regulations, which may restrict the usable area.
  3. Calculate the Total Permissible Floor Area: Multiply the buildable area by the maximum permissible FAR allowed by RAJUK. The FAR value is usually provided in the local building regulations and varies based on the zoning and land-use classification of the area. For example, if the buildable area is 5,000 square feet and the FAR is 2, the total permissible floor area would be 10,000 square feet (5,000 sq ft * 2).
  4. Account for Exemptions and Deductions: In some cases, specific elements of the building, such as basements, parking lots, or common areas, may be exempted or have different FAR calculations. It is important to consult the local building regulations or seek professional advice to accurately factor in any exemptions or deductions.
  5. Determine the Existing Floor Area: Calculate the total existing floor area of the building on the plot. This includes all floors and usable spaces, both occupied and unoccupied. If you are planning an extension or renovation, consider the existing floor area in addition to the proposed new construction.
  6. Compare Permissible FAR with Existing Floor Area: Compare the permissible FAR obtained in Step 3 with the existing floor area calculated in Step 5. This comparison will indicate if you have any additional floor area available for construction or if you have already reached the maximum allowable limit.
  7. Optimize Design and Utilization: If you have available floor area within the permissible FAR, you can explore design options to maximize the utilization of the space. Engage with an experienced architect or a design professional to develop an efficient and aesthetically pleasing layout that aligns with your requirements and complies with local regulations.

Benefits of Complying with FAR Regulations

Complying with the Floor Area Ratio regulations set by RAJUK offers several benefits:

  1. Legal Compliance: Adhering to the regulations ensures that your building project meets the legal requirements of the local authorities, mitigating the risk of penalties, fines, or potential legal disputes.
  2. Efficient Land Utilization: FAR regulations promote efficient land use by optimizing the available space. By carefully planning your construction within the prescribed FAR, you can achieve a balance between density and open spaces, contributing to a sustainable and well-designed urban environment.
  3. Infrastructure Planning: By controlling the intensity of development through FAR, the local authorities can effectively plan and manage the supporting infrastructure, such as transportation, water supply, and sewage systems, to ensure sustainable urban growth.

Conclusion

Calculating the Floor Area Ratio (FAR) for your building in Dhaka is a crucial step in complying with the regulations set by RAJUK. By understanding the FAR and accurately calculating it, you can optimize your building's potential while ensuring legal compliance. Remember to consult the local building regulations, seek professional advice if needed, and explore design options to make the most of the available space within the permissible FAR. By doing so, you can create a well-designed and sustainable building that aligns with your goals and contributes positively to the urban landscape.

graph LR
A[Total Plot Area]
B[Buildable Area]
C[Total Permissible Floor Area]
D[Existing Floor Area]
E[Optimize Design and Utilization]
A --> B
B --> C
D --> E

Note: The diagram above illustrates the relationship between the key steps in calculating the FAR for your building project.

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